linux-kernel - rfkill switch state during suspend?

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Message-ID: <899595.96336.qm@web94915.mail.in2.yahoo.com>
Date:	Wed, 9 Jun 2010 15:45:23 +0530 (IST)
From:	Pavan Savoy <pavan_savoy@...oo.co.in>
To:	Johannes Berg <johannes@...solutions.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: rfkill switch state during suspend?

Hi,

I remember in 2.6.29, the rfkill switch state during suspend was set to SOFT_BLOCKED by calling the toggle_radio of rfkill drivers.

What happens now ? 2.6.32+ ... ?

This previously posed a problems to drivers which mapped their chip enable GPIOs to the rfkill entries, because on suspend, the gpio was pulled low because of the SOFT_BLOCKED state.

A couple of lines regarding same in Documentation/rfkill.txt would be ideal too.

Thanks in advance.
Pavan Savoy.


--- On Fri, 26/3/10, Dmitry Torokhov <dmitry.torokhov@...il.com> wrote:

> From: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Subject: Re: [PATCH] rfkill: core: add custom rfkill switch
> To: "Johannes Berg" <johannes@...solutions.net>
> Cc: "Pavan Savoy" <pavan_savoy@...oo.co.in>
> Date: Friday, 26 March, 2010, 12:28 PM
> On Thu, Mar 25, 2010 at 11:39:10PM
> -0700, Johannes Berg wrote:
> > On Thu, 2010-03-25 at 23:23 -0700, Dmitry Torokhov
> wrote:
> > 
> > > > I do have an actual driver it's just that
> all 3 cores are controlled
> > > > by 1 chip_enable and individual cores are
> powered up down by s/w
> > > > commands.
> > > > 
> > > 
> > > Hmm, so the main portion of the driver needs to
> count the number of
> > > active users across rfkill interfaces 
> before powering down the chip. I
> > > do not quite understand what the issue is
> here...
> > 
> > He also wants to (ab)use rfkill to signal to userspace
> what the value of
> > that counter is ...
> > 
> 
> Well, this one is easy - just say 'No' ;)
> 
> -- 
> Dmitry
> 


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